An hour later, the drone mosquito sent back information: the wandering planet, the mass converted to the Earth's SIU, is about 6 billion trillion kilograms, equivalent to eight-tenths of the mass of the moon. (Note: As mentioned earlier, regarding the number unit of trillion, it is not one trillion equal to one million in the national standard, but one trillion in the Ming unit of measurement.) ）

Summer secretly said in her heart: I'll go, it's so big! How did it fly?

The speed is 0.15, which is three times the current speed of our ship, and the course is coming towards our ship, and the course is often fine-tuned to adapt to the course of our ship.

It seems that this special wandering planet is eyeing me! Summer scolded inwardly. "Chief of Staff, can you do a goodwill assessment and war calculus?" Summer asked.

"Yes, my lord," Diao Chan replied, "However, this is only for reference, and the main decision is still up to you." ”

"I'll go, I knew it was going to be like this, so you can calculate. Alas, now I can't get in touch with the headquarters, and I have to keep calling, or cut off the contact with the headquarters, I want to connect with the earth and ask for help. ”

"My lord, there is no conflict between the call home and the connected earth." Diao Chan replied that the spaceship and the Celestial Master's headquarters are point-to-point quantum communication, while the spaceship and Earth are another pair of quantum communication.

"I'll go, I didn't think of this, Peach, you didn't tell me earlier. I'd like to connect with my classmate and ask him if he has any good ideas. ”

"My lord, this may leak secrets."

"Leak, leak, leak your sister, your life is almost gone, and you are still talking about leaks? Rest assured, I won't divulge the core technology. You don't have to be verbose, get me through quickly! Summer shouted.

"Yes, sir!" The sable cicada connected the earth.

8:40 a.m. Earth time. Although it was a Sunday, the senior year of high school did not have a holiday, and it was the second class, and the students were all reviewing in class, and they did not find the teacher. In the summer, he typed Wu Ruize's retina: "Come out, life and death, speed!" ”

Wu Ruize picked up a book suspiciously and slipped out of the classroom, came to a corner behind the teaching building, and asked in a low voice, "What's wrong, Lao Xia?" ”

"I'm in big trouble, I found a wandering planet in front of my ship......"

"Wandering planet? Ah, this planet that I know, is not bound by the stars, it is a lonely and cold planet......"

"Don't be verbose, listen to me," Summer interrupted him, "the problem now is that this wandering planet TMD can fly on its own, and it is very fast, it collides with me head-on, and I can't hide now." Analyze it for me. ”

Summer briefed him on his current situation and projected his image onto the book in Wu Ruize's hand. And Wu Ruize sat under a big tree and pretended to be reading, so that even if someone saw and asked, he could justifiably say that he was afraid of the crowded classroom and ran out to review alone.

Wu Ruize scratched his ears and scratched his cheeks and thought for a long time and said, "Is that wandering planet speeding up now?" Is it the fastest speed yet? Well, I want to see it. Lao Xia, I agree with your plan, run away, it's hard for you to escape, you only have to face it head-on now, and you have to keep accelerating, and when you pass by it, it will be difficult for it to turn around and chase you. ”

"Do you really support me doing this?"

"Yes, Lao Xia? What else? Your current location is awkward, and you can't go to the village or the store. Wu Ruize said, "But I suggest that you realize that it is best to communicate with the other party, and it is best to be able to make peace in the past." ”

"Communication? How to communicate? Don't you know Hessian's laws? ”

"You know," Wu Ruize said, "you don't know whether the other party is kind or malicious, and you don't know if it knows whether you are kind or malicious." It doesn't know if you're acting in good faith or in bad faith, and it doesn't know if you know it's good or bad. Wu Ruize said the chain of suspicion in Hesse's law like a tongue twister. (Note)

"yes, so I'm ready to fight it now!"

"But, if possible, you'd better communicate with it, if you really want to fight, at least I can fool it, or get more valuable information, what do you say?"

"Well, that's a good idea, and I got nervous and forgot about it." Summer said, and then said to Diao Chan: "Chief of Staff, see if you can contact that wandering planet." ”

"Yes, how do you tell the other party?"

"This ...... Let me think. "Summer feels that this matter is a bit tricky, he's just a high school student, he doesn't know any diplomatic rhetoric at all, how can he communicate with the other party?

"Do you want to call Mira out?" Wu Ruize asked, "She is a top student, smarter than us, and the three of us will figure it out together." ”

"Don't use it?"

"Yes, you wait." Wu Ruize said, took out his phone and texted Mira.

Five minutes later, Mira came down and asked, "What the hell is going on?" ”

Wu Ruize said: "Lao Xia has encountered an unknown alien, and now I don't know what to do, and there is a very likely war." Subsequently, she was briefed on the situation.

Mira frowned, and after a while, she thought about it and said: "You say this: I am the forward scout of the so-and-so fleet, and I am on a pathfinding mission ahead, and you are now in the channel of my fleet, please inform me of your identity and intentions." ”

"Is that okay?" Summer asked suspiciously.

Mira smiled and said, "Try it, anyway, neither of you knows the details of the other party." Also, if you are afraid of fighting, isn't the other side afraid? Diplomatic rhetoric must be neither humble nor arrogant, we have learned it in our language books, you scumbags, you don't usually work hard, now you know that it is difficult, right? ”

"Yes, yes, Xueba's lesson is," Summer took the opportunity to please her, "Mira, you are the goddess in my heart." ”

"You don't have to talk to me poorly," said Mira, "I'll help you analyze, if the opponent's combat power is not as good as yours, you don't have to be afraid of it, if it is stronger than you, you are afraid of it's useless." Just use the plan you started with, quickly intersperse the past, don't stop no matter what the outcome, and continue to move forward according to the original course. Also, if you ask your computer to help me divide the system, how long will it take for this wandering planet to reach Earth at its current speed, if there are no other factors? ”

"What? Do you think it will come to Earth? Summer asked in surprise.

"What's impossible?" Mira said indifferently.

Summer has to admire Mira, she is so wise and calm at a critical moment, and she can see the comprehensiveness of the problem, much better than herself, if she is also a descendant of the secret guard, it would be great, but unfortunately not. I don't have time in the summer, and I want to quickly ask Diao Chan to help him analyze.

It didn't take long for the results to come out, and I only heard Diao Chan say: "Theoretically, it's 30 years, but considering the high-speed flight, the need for acceleration and deceleration, and orbit change, it will actually take about 140 years for it to reach the earth and successfully enter orbit." ”

In 140 years, it will be the middle of the next century, and hopefully the Earth will have the strength to resist the invasion from beyond the heavens.

————

Note: The chain of suspicion comes from Hessian's law, Hesse's law, that is, the "law of the dark forest", from the famous science fiction novel "The Three-Body Problem".